Also, for the people that like to "Jeep", take a look at this site. This is a Colorado 4wheel drive club with a website with a boatload of Colorado 4 wheel drive trails (and some for other states, also). WWW.traildamage.com. My wife and I are Polaris ATV riders but I find this site interesting just to see other parts of Colorado and some of the trails are ATV friendly...Also check out the series of maps produced by Latitude 40 WWW.latitude40maps.com. Charles Welles series of books at Funtreks.com are very good and I understand that either he or his son-in-law has personally ridden each trail in every one of his books...no 2nd or 3rd hand info.